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As I expected the AFB isn't properly working when the USB option is selected, /media/usb/ isn't anymore made automatic for USB-devices but is named after the label it caries.
The HDD version is working fine

As I expected the AFB isn't properly working when the USB option is selected, /media/usb/ isn't anymore made automatic for USB-devices but is named after the label it caries.The HDD version is working fine

I checked.On a flash card mounted to / media/usb backup was created.I think it quite enough.For the rest there is your plugin backupsuite.

@Dima73
@Betecentauri
Just tested it and it works flawless.
First made a back-up and restored it, after about 1 minute the Solo2 rebooted
Perfect!
I can't test it on a VU+ Duo right now but I presume this also works 100%

root@vuduo2:~# opkg install mtd-utils
Deprecated version constraint '>' was used with the same meaning as '>='. Use '>>' for LATER constraint.
Deprecated version constraint '>' was used with the same meaning as '>='. Use '>>' for LATER constraint.
Deprecated version constraint '>' was used with the same meaning as '>='. Use '>>' for LATER constraint.
Deprecated version constraint '>' was used with the same meaning as '>='. Use '>>' for LATER constraint.
Deprecated version constraint '>' was used with the same meaning as '>='. Use '>>' for LATER constraint.
Deprecated version constraint '>' was used with the same meaning as '>='. Use '>>' for LATER constraint.
Package mtd-utils (1.5.0-r5) installed in root is up to date.